Before undergoing radioactive iodine therapy, all women of childbearing potential should have what test?

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Multiple Choice

Before undergoing radioactive iodine therapy, all women of childbearing potential should have what test?

Explanation:
Testing for pregnancy before administering radioactive iodine therapy is essential because radioactive iodine can cross the placenta and expose a developing fetus to radiation, risking fetal thyroid damage and other complications. Confirming nonpregnant status (usually with a pregnancy test that detects hCG) ensures it is safe to proceed with treatment. If pregnancy is possible, the therapy is postponed to protect the fetus. The other tests—thyroid function, CBC, and urinalysis—assess health status or thyroid activity but do not address the risk of fetal radiation exposure, so they do not substitute for the pregnancy check.

Testing for pregnancy before administering radioactive iodine therapy is essential because radioactive iodine can cross the placenta and expose a developing fetus to radiation, risking fetal thyroid damage and other complications. Confirming nonpregnant status (usually with a pregnancy test that detects hCG) ensures it is safe to proceed with treatment. If pregnancy is possible, the therapy is postponed to protect the fetus. The other tests—thyroid function, CBC, and urinalysis—assess health status or thyroid activity but do not address the risk of fetal radiation exposure, so they do not substitute for the pregnancy check.

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